Stu - i you don't know what you're doing, then you haven't got a chance.

It's possibly the most cuthroat business to be in, and the overheads can be astronomical!

The bills, insurance, wages, VAT, tax, plus you don't have any start up capital, any employees that are vehicle technician qualified in any way etc etc

Sorry to be a realist, but i's possibly the worst idea I've heard this decade.