WAUSEON -- The Napoleon inventor who claims that his car gets 100 miles to the gallon said he will reveal his secret Tuesday.

Doug Pelmear said he will show NBC 24 News how he created the impressive engine.

Back in 2008, Pelmear took a cross country trip in his Mustang, and said he got more than 100 miles per gallon.

In June, he started a company to produce his engine with just 10 people on staff.

Several auto companies are naturally interested in the concept.