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One Lap of the Web: Elon Musk's Hyperloop, Greenwich Concours and a Model T

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. The 2013 Porsche Rennsport Australia went off over Memorial Day weekend at Sydney Motorsports Park and motorsportretro.com has full gallery of pictures.

Australian couple breaks Guinness record for fuel economy

An Australian couple has broken their own record for fuel economy, light-footing it across the lower 48 American states to the tune of 67.90 mpg. Helen and John Taylor beat the mark of 58.82 mpg that they set last year, landing them again in the Guinness Book of Records. They drove a 2009 Volkswagen Jetta TDI for both runs.

Texas mulls upping speed limit to 85 mph

Texas and Utah are the two states that have 80-mph posted speed limits. But Texas wants to up the ante to 85. State officials are considering changing the limit on Highway 130, which runs between San Antonio and Austin.