| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| (Jimmy of the Clue Crew reports from the Argonne National Laboratory in Chicago, IL.) In theory, an omnivorous engine can run on any fuel combination; this one adds butanol, which would result in fewer fill-ups as it's high in energy density, to the common mix of gas & this alcohol | ethanol | $400 | DJ | CARS OF THEFUTUREPRESENT | 2011-05-20 | #6155 | |
| Henry Ford planned for this biofuel made from grain to be the principal fuel for the Model T | ethanol DD | $1,200 | J | COOL CARS | 2008-03-03 | #5411 |