We've had our GSD for four years and I'm now at the point of accepting we've outgrown it. It's gone surprisingly quickly from being able to squeeze in a third P3 to run to a class, to bring more trouble than it's worth with two P4s.
It's cost 10p a mile in parts and £1k a year in capital. With the newer £££ models it could have been going on for £2k a year.
I really miss the capability, and I looked into fabricating a longer bench but the problem is that the motor power isn't really sufficient either, as we can't maintain over 10mph on some routes even in turbo (it's actually quite interesting, where we took it sort of gradually evolved to a smaller and smaller set of trips as the payload got heavier).
There was a glimmer of hope for a bit, but I see the consultation to allow more powerful motors with the same speed limits has been killed off, so I think that's the end of the line.
It's not so much delayed buyer's remorse, I don't think, but maybe I feel a bit uneasy that I've oversold it down the years. We actually got ours just after another nursery family but I haven't seen them it for a long time. For most people it's a lot of money.
Not sure there's really a point to this ramble, I'm just waiting in the role of Dad's taxi and ruminating....