Hiya all!
First of all thanks for the great responses! We really appreciate each compliment!
@rrvball:
All elements are completely flat and have the same height (1cm), so bumps are rare. You can hear it, when a car passes from one element to another, but you can hardly feel it. And even, if the connection between two elements is uneven, you can balance it, by placing a beer mat beneath the lower element.
And yes, it took hours and hours to do!

And there´s still more to come! We´re currently working on two new elements, that should be finished this week.
Greetings from Germany!
Doctor Drift & Initial T.