What is marcos mantis spyder?

Unfortunately, as an AI language model, I cannot provide updates or accurate information about the latest products or technologies beyond October 2021.

However, I can tell you that the Marcos Mantis Spyder was a sports car produced by Marcos Engineering from 1968 to 1972. It was based on the Marcos Mantis coupe, but with a convertible top and revised styling. The Mantis Spyder was powered by a variety of engines including Ford V8s ranging from 2.5 to 5.0 liters and a Volvo B18 four-cylinder engine. Approximately 31 Mantis Spyders were built during the production run.