Mayor Cleanhands decides to promote a new idea to lessen the use of gasoline in Tipsville: the idea is, during one day, to share a car to go to work, so as to most efficiently use each vehicle. Oddly enough, the new software company owned by Darkhand, Handell, offers it's software to decide which citizens should share cars. Darkhand does this in an attempt to clean up his image in front of Mayor Cleanhands. An accident causes the software to generate strange combinations of people who for one day, are forced to ride together. Soon, the story turns into a fun road movie full of chases which will show the excessive amounts gasoline that Darkhand's and the Mayor's limousines use. The latter, conceding his mistake, decides to substitute all government cars that are large for ones that are electric, which are much more useful in a city and pollute less.