Benjamin Krempel doesn't want to have to pump his bike tires anymore. Normally, that'd come off as whining, but Krempel's got the power of invention on his side: a working prototype of a bicycle tire you really don't have to pump.
The PumpTire system is so simple it's pretty surprising something like this isn't the norm. It uses a valve along with a special inner tube, working in conjunction, to tell when your tires need a little more air let in and when they're full. That's really all it is — no embedded motor or anything fancy. And nothing that'll have you using your bike any differently.
Krempel's put together a handy video showing how it all works, including a proof of his working prototype. See it below.
He's also looking for money to fund the project. $250,000, actually, of which he's only raised over $8,000 with only just more than a month to go. Seems like a tall order, but hey, people paid $200,000 to have a bunch of alien-hunting radio telescopes turned on. Krempel has an option in there whereby folks can donate only a buck, if you're looking to support the project but don't want to be a heavy investor.