 Performance Car reviewer John Barker was also impressed with the performance as well as the ride and stability of the car , writing " The V6 has a rumbly , loping note which , in league with a remarkably supple ride , belies the speed we are travelling at . I glance to the speedo and have trouble believing that it is indicating 170 mph . " Barker was also impressed with the engineering , saying " this car is catalysed , fully homologated and has passed the same tests that a Volvo needs before going on sale , " going on to discuss how the vehicle looked at home on the racetrack thanks to the design . Autocar 's verdict was " Right now , the XJ220 gives us a standard by which all other fast cars can be compared . For the few who will actually own and , hopefully , use their XJ220s , the fact that they are in command of the most accomplished supercar ever made should suffice . " 
