Then come to Germany
is this to imply that this man is blind?
Well, if i see such drivers, they always get first priority route from me 
One of the first rules i learned about priority situations.
A blind driver always has the highest priority.
This needs no imply.
What’s looking like a joke actually has a serious background.
It was an event putting handicapped on the ‘other side’ of the wheel to gain some attention to their problems in regular traffic situations.
Of course they were assisted by experienced personal in driving school vehicles
According to statements afterwards those people also had some experiences they usually cannot make, the sense of acceleration and changing direction while fast ‘moving’ which was quite some fun for them.