Potential Nest Egg, Or a car?

Hello everyone, this post is more of a public opinion grab.

I am stuck between a rock and a hard place, but maybe y'all lovely people can help me decide what I should do.

Here's my dilemma:

This is my 1990 Corvette. It's a pretty nice car, except it has way too many problems. The major problems are: The heater core needs to be replaced: no heat, and it's going to start snowing very very soon. -_-
The second problem is that my A/C (Auto Climate Control, not Air conditioning, confusing I know) is broken as well, so the car blows a ton of cold air on my face whenever it feels like it, and I don't have the ability to turn it off. Why not remove the fuse? That turns off the primary LCD screen which shows me my gas level, my speedometer, odometer, tripometer, etc..

Here is $3,000....or a down-payment on a "nicer" car.

My question for you is should I spend $1000-$2000 on a P.O.S. car and drive that until it dies, while trying to swallow my pride because it will look terrible but probably run great, and then invest $3000 into my business, OR should I purchase a new car so that I can be assured that with a newer car I won't have to maintain it as much, with a lower risk of it breaking down, in order to get to my day job?

Please let me know!