Not all of them. Some vehicles are 4 wheeled, like some modern cars you see in the street. Some business trucks, can be 18 wheeled.
Not all cars do! There are a number of vehicles that only have 3 wheels (The famous Reliant Robin that Del Boy drove around springs to mind)
No, 2WD (two-wheel drive) is not the same as FWD (front-wheel drive). 2WD refers to any vehicle that powers only two of its four wheels, which can be either the front or the rear wheels. FWD specifically means that the front wheels are the ones being powered. Therefore, while all FWD vehicles are 2WD, not all 2WD vehicles are FWD.
The basic concept is that 4x4 runs 4 wheels when you need it. All wheel drive runs them all the time regardless. The difference is, with 4x4 you get the option of high and low gears in 4x4, and not the same way with all wheel drive. "All Wheel Drive" vehicles do not run all 4 wheels at the same time. In low traction situations, the power is transferred from back wheels to front wheels where the engine weight is, when wheel spillage is detected. But "AWD" never delivers power to all 4 wheels at the same time. 4WD vehicles can power all 4 wheels at the same time, assuming that both ends are equipped with limited-slip diffs., or at least to three wheels (both rear & 1 front) if equipped with a rear diff locker only. LubeExpert
all wheel drive
No. A sled is a vehicle which doesn't have wheels. So is a canoe or a rowboat.
all wheels generate same velocity meaning all drive at same speed
Most commonly, vehicles in the past 20 years or so have STRUTS in the front and SHOCKS in the rear. Sportier vehicles will have struts at all four wheels.
Yes, just swap your bearings from skate wheels to longboard wheels, its all the same.
Use the same rule as for passing motorized vehicles in almost all instances.
Not necessarily it depends on the size of the bike.
Pneumatic trolley wheels are considered to be the best wheels for billy carts. You will need four of these wheels, and they all will need to be the same size for weight distribution reasons.
Pickups that offer 4x4 means that all four axels work at the same time. The transmission is configured to work with each axel to turn at the same time where as a 4x2 will only turn the front two axels at the same time.