This would be perfect for my dad.
He wants an e-bike for some of the time and a normal bike for the other half.
He’s in Switzerland, so a gentle ride around the lake doesn’t require an e-bike but to get up into the hills, he just lacks the cardio these days. He want’s some exercise but not too vigorous these days.
I can’t find much detail on this design though. I assume you unbolt the BB motor & crank, slide out the battery and then bolt in a piece that already has the conventional BB and crank installed. Could be done in minutes if well designed. Add some durable plugs and it could be super easy. Certainly sounds like the future to me, especially if it looks as good as this.
I could imagine keeping a motor & battery in the shed for certain big days out, when I’m ill or for uplifts. I’ll wait a few years until they’ve got this right. For me a dedicated E-bike isn’t required, but a hybrid would be awesome.