After the wannabe eBike brands disappear, it's a good bet that Trek will still be here. As well, the company doesn't put a bike in the line until it has been thoroughly tested.

With the push of a handlebar button I can turn off the power on my Shimano Steps Trek whenever the boost isn't needed, which I frequently do. I think their Bosch powered bikes work the same way.

Beyond charging the battery , the only mechanical maintenance required is keeping the chain lubed and replacing the brake pads occasionally.