Fat Memory: it was called Buggy Bike in the 70's
It was simple stories and funny gags, I liked it.
In the movie called "Across The Fields", there is a scene where Bud Spencer ride a Fat Bike, I mean a Fat Motor Bike.
The Bike was produced in the 70's by Autozodiaco, an Italian company that built Buggy cars and Bikes to use in the sand Dunes.
Enjoy the video including a scene with a Buggy Bike ridden by Bud Spencer (the Fat guy).
I Will update the blog with more details soon.