In most of the US, and in urban areas in particular, absolutely E-bikes are king. In California or the bay area in particular, motorcycles are a major contender due to ability to take on highways at speed, but still able to cut through traffic (lane splitting i.e. cutting between cars is 100% legal, but only in California, and neither legal nor illegal in DC), not to mention more power and range generally. The big difference here however is parking. Squeezing a motorcycle between to parallel parked cars is still significantly easier than finding parking for a 4-wheeled vehicle, but with a bicycle one can practically park anywhere that the bicycle can be locked up (depending on common sense decisions of how mad a person would be if you lock to some fence, vs how long you will be parked there)