Seems like everyone on here makes a good point of one sort or another.

Ride responsibly given the conditions, use your equipment (whatever you make it to be) safely, and things work out. 

Personally, I've got a brand new stock RadCity 5 plus that I'm loving.  32 km/h seems plenty for what I use it for, and at that limit I barely have to pedal on assist 5, except on really steep little inclines.  I intend to see how it performs in Canadian (Ottawa) winter, and if needed make some upgrades.  Big spiky ice tires, a couple of steep hills, and sub zero temperatures may convince me to make some upgrades, and if so I'm not likely to un-install them (except the tires) every spring   Need to keep up with traffic, more or less, as the side of the road becomes a snowbank along much of my commute. 

For what it's worth, I received a replacement for my wife's RadCity 5 plus Step Through today... after weeks of delays... and it worked perfectly (so far, knock wood).