My only experience of this stems way back to 1997 in the UK.
I worked for a department in a large company. Some eejit felt it would be a work of genius to turn us into a stand alone company within the Group. Our salaries were then approx equivalent to say $85,000 a year, with fully expensed company cars provided (we did about 35,000 km a year) that were changed every year or every 12,000 miles, whichever occurred first.
Under the new arrangement, our salaries went up to say $100,000 equivalent but no car. You could either buy your own or choose whatever you wanted and they would simply deduct the lease cost from your salary. It was not, it turned out, quite the case that you could have 'whatever you want': I asked if I could lease a Ferrari and they said no...! I would not have done so as I would have had to give up eating, but I thought it worth the enquiry.