I disagree with "add these cars so you don't have to buy it at Autobahn", simply because
I own it the game is meant to be hard (which is why the backpack was removed).
If there's a mod garage, players want to mod their cars, and for this, they need money. For the money, they work, they play the actual gamemode. That, is what we want; that, is what it's supposed to be.
Plus, cars you buy at Autobahn don't disappear, so I'd say the prices are a little low already!
Adding mod garages to LV, yes.