mercedes bionic (.19 cd, 4cyl cdi 70mpg)
 

yeah, that's the ticket...

oh wait, "Although the Bionic isn't coming to your local dealership, Mercedes does expect it to significantly influence the design language of its next generation of small cars."

super!



https://www.cnn.com/2007/TECH/03/08/c...sci/index.html

When you convert that to US gallons, it's more like 56 mpg. But 0-60 mph ~7.9 seconds, top speed of 118. Very impressive.