Measured two bikes 630 mm one is 670 mm the latter 1 meter high the other two lower, so all my bikes should fit through the bars, so there is really nothing I can do to ensure new ebike when I get it will fit, maybe quick release handle bars, clearly no point cutting the bars down where there are all within the standard sizes.
Even for wheelchairs we can't get local council to maintain the paths, I had two where there was a step of around 4 inches so the electric wheel chair was stopped returning up the step however it would go down, and there was a bar likely to injure ones legs after one step told it was to slow cyclists down, but I said it was a health and safety issue, they promised to fix, that was 4 years ago still not done.
So if they will not alter for wheel chairs, heath authority issued, then no chance for bikes.