Lots of people hypermile their cars, hypermiling is a process where someone drives exceedingly carefully to enable their car to drive the longest distance on a tank of fuel possible. People go to some strange extremes to get better fuel economy with custom-made body kits and the like. A man named Bjorn Nyland has driven a Tesla P85D 452.8 miles (728.7km) on a single charge.

He claims this is a world record, but nothing official from the folks at Guinness or another sanctioning body was granted. The starting point for the feat and the ending point was the same supercharger in Rodekro, Denmark.
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https://www.slashgear.com/tesla-models-s-p85d-goes-452-8-miles-on-a-charge-26399376/