Maybe in some places, but that's definitely not true in my city. The intersection i can see from my home office window has a 35mph speed limit and their are accidents there all the time. I haven't seen anyone badly injured, but there was at least one that went up a berm, over a multiuse bike path, through a fence and crashed into a neighbor's house.

I'd totally take my 9 yr old on a 3-4 mile bike ride if we're going somewhere that we can get to on protected bike lanes, but there are lots of places in this city that aren't accessible that way and I'd be much happier in a small city car. I've taken him along a 45 mph road on a few occasions and it's nerve-wracking, legally you aren't allowed to pass a bike until you can give them 3 foot of space but it happens ALL THE TIME and it's a real deterrent to cycling for us.

The 28mph top speed i think is a european classification thing, but yeah that'd be the showstopper for me - not the size or range.