I failed my original driving exam several years ago due to not turning my head when looking in the mirrors. Don't not do that. Otherwise you'll be fine, a broken leg or two is to be expected.
If you pass, enjoy the freedom, be sure to get a decent car (old school is superior in this respect) but don't spend 12 months not looking for work because you think you can make a living just rebuilding cars, till you do one you don't really want to sell and realise you're running out of capital and no one really want to hire you now. Arrrrgh.
If you fail, atleast you won't have to use those clumsy legs to get around or look for bathrooms anymore, right???