Alternative to standard chain

As I was trying to understand this camber angle stuff i tried to figure out how the transmission could look like...

Basically the wheel axle will not be aligned with the crankset... so putting a chain in between might be a bit difficult...

Maybe it will be easier with a belt drive:

http://www.carbondrivesystems.com/whycds.php?lang=us

Well many disadvantages...

You cannot easily control the length.. so if we want to adjust the dimensions of the bike (for different people) then it won't work..

Furthermore you cannot open the belt.. so you need special type of frame: