Above is an electric supercharger available on e-bay.
Apparently it can give your car up to 25% more power!
Below is a bilge blower also available on e-bay.
Apparently it is a fan for a boat......
12V Bilge Blower
TMC-03701-12V Bilge Blower
Bilge Blower for 3" intake pipe Spark Proof Air Flow: 90 CFM Power Source: DC 12V/3A.