In this video, 6 tiny microbots tow a Chevrolet Volt. The microbots are capable of towing up to 2,000 times their own weight, an impressive feat for sure.
Yes, the "towing" is painfully slow, but it's still amazing to see something so small have so much might.
"Not only are ants impressively strong, they are also amazing team players. This research inspired by such teamwork examples how the ways that microrobots move effects their ability to work in teams. With careful consideration to robot gait, we demonstrate a team of 6 super strong microTug microrobots weighing 100 grams pulling the author's unmodified 3900lb (1800kg) car on polished concrete."