It is a good idea. It would give the cash cards purpose other than fletching in a world with little to no NPCs.
Do have to question whether it has stocks of cars and where it would store them, or if it just 3D prints them, though. There’s also the matter of integrating hacking into it. If it takes less time to get electronics to 6-8 than it does to gather $42,000,000 to buy a Lamborghini Demasiado Caro, then no one is going to gather the cash cards.
The Auto-Clinics would be a great addition too, especially for Broken Cyborgs, Bionic Monsters and the like. If you could use it to add or remove bionics, then you could get rid of the broken ones they start with without having to gather everything and pray that it works.