It really depends what your parents' personality is like generally as to whether they are criticising your life choices or not.
One of our parents is lovely and respects our decisions in life, even if they aren't always the ones she would make. She mentioned that she is giving each of her children money when they buy a house. We aren't yet, but there was no sense that she was criticising that, she is just wanting to help her kids when we come to an expensive purchase in the future. One of her other adult children has needed financial support for various things and, whilst she has turned down some daft requests, she does think about what is important to him and would help his wellbeing.
Another of our parents just can't understand that others have different priorities and ambitions to him. When he has offered his adult children money in the past it has been with strings attached, e.g. to do something he thinks is important, even if the recipient isn't interested. It's sad to see as it is clear that he wants his adult kids to be different and have the same interests and goals as him, and offers money to try and skew their behaviour.
I guess it depends on your parents characters and your relationship with them as to which it is.
Btw I haven't driven a car for 12 years and really don't want to drive ever again. We wouldn't move to a place where a car was necessary for daily life as we dislike driving and dislike car dominated places. In an age of dangerous air pollution, congestion, road traffic accident deaths and impending climate change I think the insistence that driving a car is a fundamental life skill is really sad. And btw the last time I accepted a lift was two years ago from my mother, I was quite happy to take a taxi but she insisted. I turn down lifts because funnily enough I dislike travelling by car! When it is necessary you can taxi, uber or hire a car if you really want, cheaper than maintaining your own car for occasional use.
And the OP's parents have said the money us only for owning a car, not lessons, so the OP would have to spend her own money on lessons and servicing and parking for this car, and presumably put money towards it unless she gets one for 500 quid.
Also a car is a rubbish investment as ppl have suggested (unless they are planning to buy her a limited edition supercar...), a new car massively depreciates as you drive out the showroom, and I doubt a second hand car will hold it's price over the years, the value will go down. If you are going to actually use it that's one thing, but the OP has said she won't use it and has nowhere to park it!