Build your own car.
Get a serviceable older vehicle, strip out the gratuitous electronics and isolate the modern ignition and fuel injection. Rewire the body electrics back to analog.
You don’t need a computer to make your brake-lights work.
You could take a modern pickup chassis and build almost anything up on it including an antique pickup or car.
I saw a nice 36 Ford truck cab and fenders begging to be transplanted on a modern F250 chassis. Somebody around here put a 39 Ford sedan delivery on an S10 frame...with a small block.
That way you can get the benefit of modern brakes, suspension and power train with the cool look of your favorite ride.
Then there’s kit cars.
Very good advice..folks wont be trapped if they don’t take the bait.