[bryanlarsen]

Because it lets you use a lower top speed to maintain the same trip time. If you have an EV, you know just how much a few extra mph drops the range.

And obviously it's within reason -- if you're shredding tires, you're wasting a lot of energy doing that.

[bastawhiz]

In the context of ride sharing, though, it's likely that you spend most of the time in most rides going much slower than the ideal top speed. Most ride shares are heavily biased towards city driving with frequent stops and relatively low speed limits.