The SAHİMO can squeeze so much distance from so little fuel because it's ridiculously lightweight. The enclosed vehicle weighs just 110 kilograms (240 pounds). While details about the powertrain and exactly how the students plan to almost double their range in the little car weren't easily found in our English-language searches, we can assume they won't be cheap to implement. The SAHİMO, as is, cost $170,000.
[Source: Today's Zaman, SAİTEM via Treehugger]