this thing is very cool.
If you've seen New World Disorder IV and wondered what the hell they were riding.
http://www.konaworld.com/2k4bikes/images/med/2K4_BikeHotRod_1300.jpg
not sure if the link worked
I thought you meant bikes like this.

The first ever production bike to break the 2-litres barrier, the Rocket III is the ultimate power cruiser.
As alluded to by its name and alone among the cruiser fold the Rocket III is powered by a triple cylinder engine, an engine format that Triumph has
very much made its own. Its fuel-injected, longitudinally-mounted, in-line three-cylinder engine has a cubic capacity of 2,294cc – 140 cubic inches
– and uses the same size pistons as a ten-cylinder American muscle car.
But the impressive numbers don’t end there as the Rocket III makes more peak torque than two together of almost any other production motorcycle. To
be precise, a massive 147ft.lbf torque at 2,500rpm, with 90% delivered at a mere 1,800 rpm.
Hey man
What about the BOSS HOG not really a motorcycle specific engine (V8) but a genuine production motorcycle! only in the USA?
Engine: 350 Chevrolet, 355 HP ZZ4
Speed: 1000 RPM @ 25 MPH; 6000 RPM @ 150 MPH
Gas Tank: 12 Gallons
Cooling System: Aluminum Radiator
Carburetor: 45 MM Weber Sidedraft with Modified Venturi & Manifold
Wheelbase: 79.5"
Weight: 984 lbs (dry)
Tires: Metzler Rear:15x200 MM
Metzler Front:16x130 MM
Fork: 4" Over Tubes
Triumphs are cool! You don't hear the words "Harley Davidson" in the bible do you now. my Dad's got a 250 Tiger Cub he's
gonna restore.
:thumb that bike is scarey!
take a look at bikerodnkustom.com, you'l never look at pedal power the same way again!
I trying to recall the company but i think it was GM Dodge Tomahawk was it, a V10 bike. Now that is crazy image taking off at full throttle
ouch!!!
Cruzin in a Golf
yeah that was the dodge viper engine in a bike, not truly a bike (it had 4 wheels, just close together) theoretical top speed of something like
300mph.
but cool stuff either way 
It has 48 cylinders
Uses a 50cc two stroke engine as a starter motor
Weighs over a tonne.
Will empty a tank in under 15mins, on idle.
Yes it is rideable.
Impractical but I love the genius behind the motivation to build a monster like this.