Toyota X Prologue Not EV Related, Gets Unveiled as Bold Next-Gen Aygo Preview 17 Mar 2021, 10:09 UTC · by Only last week, Toyota shared a first glimpse of the X prologue, a mysterious model teased as a major debut for the European market. Speculation about it being powered by electrons hasn’t panned out, and instead, our hunch about it being related to the company’s planned Aygo successor was actually spot on. 32 photos Without specifically calling it a prototype or concept, the Japanese automaker claims we’re dealing with a “ bold illustration of just how much attitude a small car can have. With this prologue, Toyota reimagines how the A-segment could be spiced up.”