the CityQ is 4-wheel electric bicycle with car-like functions and comfort
How to Make an 4 Wheel Electric Bicycle at Home - YouTube
CityQ - cargo and passenger e-bike with 4 wheel - Avial Bikes
Amazon.com : Bike 4 Wheel Cruiser Bike Adult Tricycle Single Speed Bicycle Aluminum Frame with Large Size Basket for Recreation/Shopping/Exercise Cycling Pedalling : Sports & Outdoors
UltraTRX Electric 4-Wheel Quad Stomper ATV | Fat Tire Electric E-Bikes | UltraTRX Electric Bicycles
Four wheel bike hi-res stock photography and images - Alamy