Inhabitat's Week in Green: solar train tunnels, refillable battery goop, and the world's first 3D-printed bikini

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

This week green transportation left fossil fuels in the dust as Inhabitat reported that a record-breaking electric VW Bug rocketed from 0-60 in 1.6 seconds and Team Steam unveiled a space age vehicle that is vying for the title of "fastest steam car on earth." We also spotted the world's first natural gas-powered supercar, while a team of Cambridge students unveiled a sleek solar racer that will attempt to travel 1,800 miles in the World Solar Challenge. Oil fuels also lost more luster as GM's CEO called for a $1 gas tax increase in the US, while MIT unveiled a new type of liquid flow battery that could refuel electric vehicles in a snap.

As the summer sun hits its stride groundbreaking solar power projects are lighting up left and right - this week Google unveiled a new solar patent that could make solar energy cheaper than coal, while QSolar rolled out an array of rainbow-hued Kristal panels that can replace windows and walls. Photovoltaic gadgets also had their moment in the sun as Pixel Qi pulled back the curtain on a cheap, efficient solar-powered tablet and a wave and sun-powered seafaring robot received $22 million in funding.

Speaking of solar power, this week we applauded the opening of a two-mile-long photovoltaic train tunnel that will provide power to the Paris-Amsterdam high-speed rail line. We were also wowed by Steve Jobs' vision for Apple's new spaceship-shaped clean energy campus, and our Bright Ideas Lighting Design Competition is really heating up, so be sure to vote for your favorite green lamp before the contest ends next week. Finally, we shared 6 great green Father's Day gifts for tech-savvy dads, and as summer gets set to begin we brought you exclusive photos of the recently opened section 2 of New York's High Line park, a beautiful suspended swimmer's oasis in Denmark, and the world's first 3D-printed bikini.