How to get to a very high speed on two wheels?

There are three thing you need (I presume you have good skills, you can handle a bike at a very high speed):

1. a good bike, it's better if you have a road bike because the tires count if you want a really high speed

2. a hill, on a good hill you can get up to about 60 km/h (I got up to 67,2 two days ago)

3. a truck, or a van, a big vehicle, this helps to reduce drag, you just have to get behind it and basically you can go with the same speed - be very careful, this is very dangerous, if the vehicle brakes hard there is a chance that you hit it, or if you get out of the vehicle's protection the wind will hit you very hard 

I have done this a couple of times and I got up to about 70 km/h but this is very dangerous, don't try this unless you have a good bike, good skills and you know the road :)