Kaley Cuoco introduces an epic new challenge. Two teams compete in a road trip across the USA where the lowest CO2 emissions wins. Meet the teams, see the wonders of the west coast, and discover new and cleaner forms of transport on the road from LA to Vegas baby!
Travel Hackers Sara Dietschy and John Hill experience some troublesome terrain in the wilds of Utah, while intrepid duo Damon and Jo enlist some real horsepower on the trail to Telluride.
On the penultimate leg, Team Alpha and Team Omega must get their hands dirty as they cross four states of the Midwest - all while driving some lean, mean, hard-working - cleaner emitting - machines.
With the finish line in sight and almost 3,000 miles covered, both teams are playing for the ultimate prize, but who will triumph in Kaley's final challenge?
The challenges come thick and fast on the way to Germany - Omega suffer bruised behinds in their eco-boneshaker, whilst Alpha get up-close and personal in the cosiest EV on the road.
Tensions rise in the awe-inspiring Alps: Alpha discover there's no limit to team Omega's competitive streak and our heroes go head-to-head in a race to source the local produce of Bavaria.
After the highs of the Alps, we hit the lows on the road to Budapest. Omega go underground, Alpha immerse themselves in Hungarian culture, and both teams find themselves off-grid.
As our heroes face immovable barriers, stuff their faces with Bulgarian snacks and face the elements while camping, Travel Hack builds to the ultimate face-off on the way to the finish line.