For those who are having problems with ideas here are some ideas I considered:
Spotlight hobbies has the Baretta for $20, which could be made into a nice sleeper.
There are pickups galore out there like the S10, Bronco, or Ram D50.
Police car kits are abundant and can be made into sleepers if you don't mind the extra doors.
Model Roundup has an '87 GNX for $16 that can be made to look like a Regal with the right massaging! Wow, I like that one myself.