Can I use cars I bought listed under "my cars" in the career mode? I could only use them in ...

Sorry should have been more cool with my comments. Are you saying that I buy a DLC pack and THEN have to buy the cars again via Career Mode? I had thought I purchase the cars and could use them immediately but the only cars I see are the gifted cars, which
make me buy them. I would have thought when I buy cars I can use them in the game, Free Play and Career, but none of them show up in My Garage and not sure how to find or use them?

What you also need to remember is the dlc cars can be used in a few of the modes other than career mode without buying them in game. Career mode is one where you need to gather prize and reward money and then buy cars you want in your career garage.

go to event list and look for the green and blue squares in the different events(this tells you what events you have cars available for).

Blue=garage cars eligible

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Green=current car eligible

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grey=no cars available

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as for the career, you are prolly going to need an omoligated racing car, for a multi-class event.

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But to raise some extra credits go into event list under career and use the cars you've earned to complete the green and blue colored event boxes. don't worry, if you complete events in event list they will still pop up in career since the career, once completed,
just starts over.

What exactly are you asking? If you go into career mode, they will start you out with a low powered car. If you're doing free race, the garage icon in the manufacture list is the career garage. If you have no cars in career, you won't have cars in there
for free race.

New Project Cars video looks at 'Career mode'

www.shopto.net/.../New-Project-Cars-video-looks-at-Career-mode