Best get used to being afraid then as an owner of older vehicles you really will have to be willing to compromise. It isn’t just the poor fuel mileage (both my old trucks get 10 to 12 miles per gallon) but at $100 per hour rates at repair shops and with older common parts becoming expensive aftermarket productions for restoration of classics you will be paying a lot of money or doing all your own work which saves at least half the cost of repairs. Even things like restoring the window and door mechanisms and seals can be costly, cheaper than a new vehicle in most cases but still very costly. As an example the cheapest square body Chevy trucks are selling for more than $15,000 if properly restored and many originals several times that.