and then there were the automobiles that had the battery under the drivers seat. back in the early 50's, I had a 1937 Graham, and one day I had a hot seat with smoke, I pulled over and removed the seat, there was a broken seat spring that was touching the battery.
That was a problem at times with the old VW bugs, too, which kept the battery under the back seat. As I remember it now, they were issued with a factory cover over everything, but the cover didn't always survive the first battery change. The buses were safer, but the battery was off to one side of the engine compartment, and you couldn't add electrolyte/water without a special low-clearance battery-water bottle, or a turkey baster and a mirror. Or removing the battery, which was a pain.
And then we have the Triumph TR2 (and maybe TR3, can't recall), on which the two six-volt batteries, connected in series to make a 12-volt system, were one on each side of the driveshaft. The cable went over the driveshaft, with a sheet metal shroud to keep it from rubbing; but if the u-joints cut loose, the driveshaft could beat the !@$%$&^ out of the batteries.