Transportation oddities (16 images)

Ray the Moolah Shriner salutes as he puts his car up on two wheels during the St. Louis Holiday Parade in St. Louis on November 27, 2003. Thousands lines the parade route in 50 degree weather to see marching bands, floats, balloons and join in the holiday cheer. (UPI Photo/Bill Greenblatt)

This General Motors image shows a new prototype Segway being devolved between the two companies, the electric two-seat vehicle with just two wheels, could allow people to travel around cities more quickly, safely, quietly and cleanly, and at a lower total cost. The collaboration, dubbed Project P.U.M.A. (Personal Urban Mobility and Accessibility) combines several technologies that increase mobility freedom with zero emissions, enhanced safety, seamless connectivity and reduced congestion in cities. The Project P.U.M.A. prototype takes a test drive in Brooklyn, NY Sunday, April 5, 2009. (UPI Photo/Emile Wamsteker/General Motors)

Some drivers try out alternative transportation choices as gas prices continue to rise in Denver on April 15, 2011. Gas and food price increases will affect the nation's economic growth in the coming months. Gasoline jumped 5.6 percent last month and has risen nearly 28 percent in the past year. Consumers paid an average price of $3.81 a gallon nationwide on Friday according to the travel group AAA. UPI/Gary C. Caskey

Masters of Disaster performers Shockwave and Jimmy Franklin's jet assisted Waco thrilled the crowds both in the air and on the ground during Air Power over Hampton Roads, Langley Air Force Base's annual air show, May 23, 2004. (UPI Photo/Alex R. Lloyd/Air Force)