Turbo Granny's backstory involves protecting young girls who were victims of evil acts in the tunnel. Okarun gains Turbo Granny's abilities after being possessed, needing help to control his powers.

Over the past 25 years, turbochargers have gone from a relative rarity to a fixture of the new-car buying experience. Where in 2000 only 1% of new cars had the technology, according to the ...