In my video I show the 1982er Di Blasi R7 folding motobike into a bag, with Coldstart and the folding procedures. Watch out, no motorized vehicle will be harmed in the action of the video, don’t make a wheelie with an cold motor!
Please search for Di Blasi R7, then you find the firms who sell the bike. For Germany I read that they do not sell the models with gas powered motor, only with electric wireless power.