The Tesla Model S is one of the highest-rated electric cars ever, and it just got even better. This week the automaker rolled out an upgrade that gives the vehicle a bigger battery, a refreshed exterior and a "bioweapon defense mode." Meanwhile, the Solar Impulse sun-powered airplane is getting set to fly across the Pacific Ocean after a lengthy stop in Hawaii. Stephen Hawking teamed up with Russian billionaire Yuri Milner on a plan to send postage-stamp sized spaceships to Alpha Centauri in search of life. IKEA announced plans to launch a chainless bicycle later this year, and a popular new bike/stroller hybrid hit the market only to sell out in a matter of hours.