I might have found an electrical bike with a crate in front, similar to the one depicted, though in the dream it was mostly red.
It was left seemingly alone on a street corner in Berlin (I think), but when I approached it to have a closer look, I saw that my former mathematics teacher Einar sat inside the crate. He asked me to jump in, and I did, and the bike started to ride and I do not know who drove it or if someone drove it at all.
I cannot be sure if it was Einar who owned the bike or if he has indeed stolen it. I did not ask. Posting just in case. Dream safe.
Ps:
Additional info is that I remember my teacher as a trickster who was very fond of practical jokes, so if he has not matured from this demeanor, likelihood is high that he did in fact steal it.
I also vaguely remember him wanting to take me to Leipzig zoo to show me their Komodo Dragon. I can’t recall if we made it all the way, but that might be a good place to look for starters.
Thanks for pointing out this. Mathematic teachers in bike dreams tend to be trouble. Lets figure out the exact connection between math teachers and missing bikes in dreams. We have no time to lose. The entire dream bike community must work together on this.