This, and freeing up the streets from parked cars. If cars are self driving they can go park themselves into some big, far away car parks instead of clogging the streets. In europe it can easily multiply by 2 or 3 the throughput of most big cities.

In general south europe culture it is normal to drink wine to food, and enjoy it, but also embarrassing to get publically drunk.

Whereas in northern europe, though, it's all beer or spirits and the aim is to get as drunk as possible as quickly as possible.

These generalisations are based on my own observations. There's doubtless a lot of variation.