I've never driven an automatic car, although I'm legally entitled to. I would get bored driving an automatic car - it would take the skill and fun out of driving.
Personally, I would use your grandma's car. I never understand it when people say that it's not worth mending a car because the repairs would cost more than the car. That doesn't matter. If the car goes, it's worth it.
When I wanted to buy may car for £494 my parents kept suggesting I saved up a bit more for a more reliable car (actually, old cars aren't as unreliable as people think as a general rule! My car's been to Scotland and Wales from Birmingham). Anyway, I've spent about £250 on mending my car, most of which was for general maintenance (brakes, alignment etc.). The car, according to the insurance company is worth £250. That means I've so far spent £494 plus the car's official value of £250 (£744 altogether) on a very good car instead of spending £1000+ for a newer, 'more reliable' car which would not necessarily have been more reliable.
So, I never understand why it matters that the repairs cost more than the car's value.
_________________
I don't have Aspergers, I'm just socially inept
Dodgy circuitry! Diagnosed: Tourette syndrome. Suspected: auditory processing disorder, synaesthesia. Also: social and organisation problems. Heteroromantic asexual (though still exploring)