Boeing MQ-25 Stingray – Cost: $201 Million

The Boeing MQ-25 Stingray is another aptly named military vehicle. Looking at the unmanned aircraft system’s 75-foot wingspan and curved nose, you’d see its resemblance to the sea creature. And like stingrays in the wild, the MQ-25 isn’t made for fighting.

It serves as a carrier and refueling aircraft for Boeing’s deployed military fighter jets. Speaking of refueling, the MQ-25 can deliver 15,000 pounds of fuel and travel a distance of 500 nautical miles. The latter ability is thanks to its turbofan engine, made by the aerospace arm of the luxury carmaker Rolls Royce.