I would disagree with the above.
If they want to transfer directly to your bank account then they just need the account number and and sort code of your bank to make a normal account to account transfer (usually by something called Faster Payments) These now happen quickly, and there is usually no need to wait overnight for the transaction to occur.
You can wait for the money to show in your account before handing over the car. Once it's in your actual bank account I don't know any way of reversing the payment (not in the UK anyway). If you believe Hollywood this is how all the shady criminals pay each other (and they have no reason to trust each other at all.)
Here's a tabloid article - Check out this article
https://www.mirror.co.uk/money/what-...-money-6076619
For full peace of mind ask your bank of course.
if they are coming to you to collect and make the payment - then you'll have to be using electronic banking yourself (or go to an ATM) to check your balance has increased by the correct amount.