What are some cheap advertising/marketing channels?

[Terry B]

You didn't mention HOW small your budget is. Radio ads can be cheap, and so can tv commercials if they are not aired in prime time.

If those are too expensive, consider using one of those "billboard by the day" services to get the word out.

Also, write a press release and submit it to all the major local radio and tv stations - invite them to the premiere "showing" of the new car (perhaps you'd exhibit it in a car show?), and their coverage of it will be free.

You could work with a local radio or tv station to offer a prize (maybe an iPad) for its listeners or viewers, perhaps when they spot the new car around town. You could limit this contest to just 1 day, or even just 1 rush hour, but be prepared to have several winners.

Hope that helps!