XBS-Bot

View credits:
Press Up, Down, Left, Right, White, Left(2) at the main menu.

High suspension:
Press Up, Down, Left, Right, White, Left, Right at the main menu.

Mini cars:
Press Up, Down, Left, Right, White, Down, Up at the main menu.

Wire frame cars:
Press Up, Down, Left, Right, White, Right, Left at the main menu.

Bonus cars:
Enter one of the following names at the driver creation screen to unlock the corresponding car in any game mode.

Audrey Clark
Benny Parsons
Buster Auton (pace car)
Cheryl King
Chuck Spicer
Crissy Hillsworth
Daryl Wolfe
Dave Alpern
Dave Nichols
Diane Grubb
**** Paysor
Jim Hannigan
Joey Joulwan
Josh Neelon
Katrina Goode
Ken Patterson
Kristi Jones
Mandy Misiak
Michelle Emser
Rick Edwards
Rick Humphrey
Sasha Soares
Scott Brewer
Tom Renedo
Traci Hultzapple
Troi Hayes

Albuquerque track:
Finish first in the point standings in the Full Season.

Boca Chica track:
Finish first in the points standings in the Road Course Challenge.

Cocoa Beach track:
Finish first in the points standings in the Superspeedway Shootout.

Devil's Canyon track:
Finish first in the points standings in the Short Track Challenge.

Bonus cars:
Win the points championship in career mode to unlock the following cars and clips.

One time: Greg Biffle's and Shane Hall's Busch car. Note: This also unlocks another clip in the EA Sports section.
Two times: Kevin Grubb's and Randy LaJoie's Busch car.
Three times: Jason Keller's and Jamie McMurray's Busch car.
Four times: Chad Little's and Michael Waltrip's Busch cars.
Five times: Elton Sawyer's and Mike McLaughlin's Busch cars.
Six times: Jay Sauter's and Mike Dillon's Busch cars.
Seven times: James Finch's and Scott Wimmer's cars.
Eight times: Jeff Green's car.

FMV sequences:
Successfully complete season mode to unlock a new FMV sequence each time that it is done.

Hint: 2nd Place Spinout Challenge award:
The key to winning this challenge is track position and pit strategy. Start the race and drive your way to either first or second place within the first three laps. At the end of lap three, make a pit stop. Take on tires and just enough gas to finish. Adjust the wedge setting if necessary. As the rest of the field cycles through their pit stops a couple of laps later, make sure you are in a position to recapture second place. As you near the finish line on the last lap, aim your car to crash into the outside wall right at the finish line. When the car hits the wall, the impact will spin it around backwards as it crosses the line. This should be sufficient to win the challenge.

Hint: 2nd Place Spinout Challenge award:
Winning the "2nd Place Spinout Challenge", awards you the following Thunder Cards:

+1 Extra Gas (Defensive) - 1
+5 Gas Guzzler (Offensive) - 1
10% Faster Pitcrew (Defensive) - 1
+5 Less Tire Wear (Defensive) - 1
+5 Less Body Damage (Defensive) - 1
+5 Engine Protection (Defensive) - 1
+15 Acceleration (Speed) - 1
+1 Air Resistance (Speed) - 1
+2 Air Resistance (Speed) - 1
+3 Air Resistance (Speed) - 1
+25 Draft Bonus (Speed) - 1
20% Tire Damage (Offensive) - 1
Hint: Long Haul Part 3 Challenge (Talladega) award:
Winning the "Long Haul Part 3" Challenge (Talladega)", awards you the following Thunder Cards:

+5 Less Tire Wear (Defensive) - 2
+10 Less Tire Wear (Defensive) - 1
+5 Engine Protection (Defensive) - 2
+15 Engine Protection (Defensive) - 1
-40 Speed Limit (Speed) - 1
+3 Air Resistance (Speed) - 1
+25 Draft Bonus (Speed) - 1
10% Tire Damage (Offensive) - 1
Speed Demon (Speed) - 1
X2 Double Damage (Offensive) - 1
Hint: Long Haul Part 4 Challenge (Sears Point) award:
Winning The Long Haul Part 4 Challenge (Sears Point) awards you the following Thunder Cards:

+5 Gas Guzzler (Offensive) 1
+10 Gas Guzzler (Offensive) 1
+10 Less Tire Wear (Defensive) 1
+5 Engine Protection (Defensive) 1
+10 Acceleration (Speed) 1
-20 Speed Limit (Speed) 1
+25 Draft Bonus (Speed) 1
30% Tire Damage (Offensive) 1
Tight Turns (Defensive) 1
Oil Slick (Offensive) 2
Proving Grounds Track 1
Hint: Rubbin' Pit Road Part 1 Challenge award:
Winning the Rubbin' Pit Road Part 1 Challenge awards you the following Thunder Cards:

+3 Extra Gas (Defensive) 1
+15 Less Tire Wear (Defensive) 1
20% Tire Damage (Offensive) 1
30% Tire Damage (Offensive) 1
Hint: Speed Demon Part 2 Challenge award:
Winning the Speed Demon Part 2 Challenge awards you the following Thunder Cards:

+2 Extra Gas (Defensive) 1
5% Faster Pitcrew (Defensive) 1
+5 Less Tire Wear (Defensive) 1
+5 Less Body Damage (Defensive) 1
+1 Air Resistance (Speed) 1
10% Tire Damage (Offensive) 1
Hint: Speed Demon Part 3 (Daytona) Challenge:
Start the race and work your way through the field as best you can. It is not necessary to be at the front. At the end of lap three, make a pit stop and take on tires only. Do not adjust the wedge very much, if at all. Fix any damage that you may have received. Go back out onto the track. Your driving line now becomes the critical factor for achieving the 47 second lap that the challenge requires. At the beginning of your second lap back on the track after your pit stop, your speed should be near 190 or 191 mph. As you enter turns one and two, your entry speed should be around 195 and exit speed around 184 or 185. Any slower than that on the exit, and you will be able to make it up on the backstretch. As you enter Turns three and four, entry speed should be near 197 and the exit should be around 183 or 184. If you keep those speeds, you should run a lap somewhere between 47.5 and 47.6 seconds. It is absolutely imperative that you keep a steady line through the corners, otherwise you will scrub off too much speed if the car drifts off line. You will need to make a second pit stop to gas up and get four more tires, probably around lap seven or eight. If you can draft on other cars, this will significantly pick up your turn entry speeds but you can run a 47.6 second lap without a lot of drafting help.

Hint: Ramming cars:
Get the car you want ram directly besides. Keep him beside your car on the left side. When you are coming around a corner, press Analog-stick Left to send him straight into the wall. You can also keep him along your left side and wait for the pit entrance get near. Then, press Analog-stick Left to send him into the pits. Some cars can regain control before they go in, so get as close as you can.