The Mars SER (Small Experimental Rotorcraft) is seen in test flights over Mars terrain. Due to Mars thinner atmosphere, multiple blades and faster speeds are used to achieve lift, hence giving the craft a more pronounced "blurring effect" due to the high speed rotation. It's also affectionately known as "The Mars Puddle Jumper". This and other Mars vehicles are considered to be currently in their early concept design phases for 2030 and beyond.