Not a problem at all. Any auto parts store, ebay or amazon can fix you up with a key and switch.
In the ‘70s I knew a woman who drove a VW bug. The key had been lost for a long time, and she had hooked up a simple toggle switch for the ignition and a push button for the starter. Worked fine. Might not have been such a good option in a city.
Think these guys look smart enough to figure that out?