Yeah, at least it should be four-stroke with dedicated oil lubrication.

Why doens't an E-bike doesn't need annual inspection while something like

https://fr.wikipedia.org/wiki/V%C3%A9loSoleX

does require annual inspection? Still looking for a real lightweight bike with an ICE. Speed wouldn't matter, 20MPH / 30km/h would sound reasonable.

> Why doens't an E-bike doesn't need annual inspection while something like ... does require annual inspection?

Emission testing as a moped, which is inapplicable to e-bikes.

(Probably also some bureaucracy, but that's separate.)

> lightweight bike with an ICE

That's an oxymoron. You can, however, get lightweight and entirely stealthy e-bike.

That gives you much more for much less, saves you the terrible noise of a small ICE with improper exhaust dampening, saves you a lot of maintenance, and probably also saves you and those around you some lung cancer while we're at it.

You'll be looking for a long time for your lightweight ICE bike. Probably be faster just to build it yourself with a leaf blower motor.

Also noisy and failure-prone.

Also very dirty exhaust