What's the noun for automobilization? Here's the word you're looking for.
automobile
(US, Canada) A type of vehicle designed to move on the ground under its own stored power and intended to carry a driver, a small number of additional passengers, and a very limited amount of other load. A car or motorcar.
“Car historians have been tempted to interpret resistance to automobilism as anti-modernist, reactionary struggles by marginalised Luddites, fighting for a lost cause.”