Solar Impulse 2 's epic journey is finally coming to an end, after nearly completing it's round-the-world adventure. Having first taken off in March of 2015, the voyage is expected to end in Abu Dhabi sometime this week.

The exclusively solar-powered airplane took off from Cairo Sunday, making the trip the 17th and last leg of the entire journey.

The flight is estimated to take around 48 hours. If so, pilots Bertnard Piccard and Andre Borschberg will have flown 21,748 miles (35,000 kilometers), making it a record for an aircraft of its kind.

It definitely won't be the first time the plane and the pilots break records, considering they've broken the record for the longest solo flight from Japan to Hawaii, and have managed to cross the Atlantic, all fuel-free.

Crossing high temperatures and managing no-fly zones will make the journey a bit difficult for the duo, but we have no doubt they'll end the journey strong. In the end, nothing good comes easy.

"We have never had to deal with temperatures so high before on our round-the-world tour, but a little challenge at the end of our mission is always good," the team said .