It is a real real pity. 
I’m using 18’ Evo fot about 1,5 month. It’s my first Strida and it is great (besides the tyres, they suck). I’ve put on rinsten spring , saddle shocking absorber, and it becomes more great. 20-30 km is the standard i ride daily. 50 happen too.
But the Evo’s weight is a little bit too high for me while i go for shopping with the bike. And suddenly the opportunity has occured to buy second-handed C1 for a good price. Mudguards are possible to mount, rear carrier rather not, but gears i’ve hoped are the real option here.
It is a real pity that C1 is not liable to modding.
It is a real pity that C1 has no gears 
Whyyyyy…
Thanks for your response.