Large steam turbine generators can produce an astounding amount of electrical energy 24/7 and don't need an overhaul too often, but they are massive and of no use for moving vehicles.

For vehicles, you want smaller and lighter powerplants that produce lots of horsepower and thrust, but these wear out more quickly. The trick is to design it and test it until you are confident that it won't wear out until just after you are finished with it. Then, just replace the worn out bits that got you where you wanted to go and do it again.

An F1 race car, Top Fuel dragster and the Space Shuttle were all high-performance vehicles, and are all reusable if you have the right budget.