Yeah, but only before beating the first boss, who's easy anyway.
Few tips if you buy it:
Save it on a memory card with Underground 2 on it. That will give you more cash so you can buy the VW Golf GTI, which has the best stats.
Also, after you beat a boss, you can pick reward cards. Always pick Unique Performance upgrades and something else. That can unlock performance parts you can't get in any shop. Now, I have a Golf GTI which is actually faster than the Chevrolet Corvette C6.R you get by completing career 100%.