Rank #81
Use a solar-powered RC speed boat.
This solar-powered RC speed boat is a great way to enjoy the outdoors while having fun. It is powered by the sun, so you don't have to worry about running out of fuel or having to recharge the battery. The boat is designed to reach speeds of up to 20 mph,
From Wikipedia
The following is a list of speed records for various types of vehicles. This list only presents the single greatest speed achieved in each broad record category; for more information on records under variations of test conditions, see the specific article for each record category. As with many world records, there may be some dispute over the criteria for a record-setting event, the authority of the organization certifying the record, and the actual speed achieved.