After I passed driver's ed, I still spent the next two years getting lost within a few miles of my house. But drop me in any alley in GTA5 and I can get to any other spot in a pretty short path (although I confess it often does involve dangerous jumps).
Some people would buy boats, private planes, art, ... I would hire a team to replicate my child neighbourhood perfectly in a gran turismo or preferably GTA 5 engine lol. You'd get pretty far with a million USD in the modding community
It's 2.5D, I used a 3D engine but the graphics are just satellite imagery projected on to a terrain map.
And an amazing resource for organizing street racing or any other event where knowledge of average police response times might be useful. Playtesting exactly how one can best evade pursuing police on realworld streets would be very fun.