I had an old Series era Landrover as a paddock basher when I was a kid, that had a manual choke. It also had a backup crank handle for starting the engine which I had to use occasionally as I was using starter batteries which had been retired from usage in the family cars, a gearbox with no synchro on first/second, and the foot brake didn’t work. Would recommend, I definitely had fun.

That’s one with big potential but not one to lead off with, best to wait until you’ve ‘invented’ a few obvious game changers and established your philosophic credentials before attempting to introduce basic medical hygiene…

Electricity is a hard ask to even attempt to do in ancient times. Luckily there’s a variety of other simpler things to establish yourself as a genius inventor - strirrups, wheelbarrows, magnetic compasses, the idea of a crank handle, and how to use triangular bracing to make a strong truss would be good options.

It’s high quality comedy from Terry Pratchett and Neil Gaiman. The base idea being that the biblical antichrist and final battle is real and approaching but the angel and demon who are meant to be leading the battle between good and evil have decided that after thousands of years on earth they’re actually ok with the status quo.

It’s also a TV series which was a reasonable adaptation (at least the first series, haven’t watched past that) but the book is as usual superior.

Petrol and gasoline are the same thing, it’s just different terminology.

Better not let any clean freaks see this - they’ll have a cow!