Sounds fishy so far. Who would send a deposit on a car that he has never seen in person? If he asks for your banking info to send the deposit to an account, I would not do it. I only accept UNITED STATES POSTAL MONEY ORDERS for any kind of non cash payment. Then I take it to the Post office and have it verified and have them cash it.
Can you verify his address and phone number?
Did he ask all the right questions that a real high performance guy would ask?
If he is a member of Racing Junk you can go to the Feedback and Scammers section of this forum and ask if anyone has dealt with him. If he is not a member maybe someone has heard of him on the forum if he has done this before.