What kind of tech startup can be built over four days, while riding across the country on a bumpy bus with somewhat dodgy Wi-Fi? That’s what the people who took the StartupBus to Austin, Texas for the South By Southwest Interactive conference found out.

The StartupBus had its biggest year ever this year, with busloads of hacker-entrepreneurs from 11 regions in North America coding their way down to SxSWi with the goal of launching a minimum viable web app by the time they arrived in Austin.

Last Sunday, a select group of the best StartupBus apps came together to pitch their work to a panel of potential investors. The winner was Cerealize, a website that lets you mix your own custom blended breakfast cereal and ships a box to your home. Watch the Cerealize team pitch their product to TechCrunch TV in the video embedded above, as well as the moment they were announced the winners of the StartupBus Grand Finals (the Grand Finals bit was shot by videographer Andy Newman.)

And below you can watch the entire footage of the StartupBus Grand Finals, to see pitches from Bumper Crop, Curious City, Gourmair, Happstr, Scoringo, Spott, as well as Cerealize.

Also, TechCrunch TV’s very own John Murillo rode the StartupBus all the way from San Francisco to Austin, and shot some great daily recaps of the entire trip:

• Day One: San Francisco to Indio, California

• Day Two: Indio, California to Las Cruces, New Mexico

• Day Three: Las Cruces, New Mexico to San Antonio, Texas

• Day Four: San Antonio, Texas to Austin, Texas