With economists and scientists projecting that renewable energy — specifically solar — will be the dominant source of energy within the next 20 years, it’s important to note that they still have a ways to go.

Deutsche Bank produced a 175-page report this past week predicting that the “solar energy will generate $5 trillion in revenue while displacing fossil fuels,” reports Alternet.org. The report touches on the fact that the solar industry’s market share will jump to 10 percent, and if the cost of solar storage can continue to decrease, thanks to smart policies, then the demand will skyrocket. With the cost of lithium-ion batteries already decreasing, the bank predicts that the cost will continue to decrease by 20-30 percent yearly, which will allow for solar energy to be more for commercial use.

This report gives hope to a market that is young and just beginning to be competitive, but the industry still has ways it can improve, and the report doesn’t even touch base on electric cars. Goodyear, however, may have a way to even further increase efficiency in solar-powered and battery-powered cars.

At the recent Geneva auto show, Goodyear introduced the BH03. The BH03 is a revolutionary tire that takes the kinetic energy in the heat that is generated while driving and turns it into electrical energy to recharge the car’s battery. With the range of electric cars’ batteries constantly being questioned, this product could fill that void once and for all.

The tire is also equipped with black patches that are used to absorb sunlight that hits the tires when it is parked, just further increasing the amount of heat that can be transformed into energy.

While the tire is only a concept at this point and the Deutsche Bank’s report is merely a prediction, they are both fascinating peaks into the world’s future technologies. Renewable energy and electric cars may not be entirely accepted just yet, but these ideas show that they may not be for very long.