Toyota UK has posted a video with links to the full story of a TRD-prepped Prius Plug-in Hybrid which set a “lap record” of 698 mpg at 40 mph at the Nürburgring Nordschleife.

“Three-digit records are nothing new at the Nürburgring, the go-to location when car manufacturers want to prove the pace of their latest models,” said the automaker, “but until now, these feats have always been about miles per hour, not miles per gallon.”

The company said its lap demonstration was a “a genuine, real-world test with the car running in traffic during a public session and complying with all the circuit rules, including the 60km/h (37 mph) minimum average speed.”

One lap of the famous track is 12.9 miles, and the Prius plug-in hybrid with its 4.4-kwh battery runs in electric only mode for an EPA rated 11 miles “elec + gas” or 6 miles all-electrically.

In regular hybrid mode, the Prius gets 50 mpg combined just like the conventional Prius upon which it is based.

Toyota was obviously able to keep the car in the e-zone for the majority of the lap record of 698 mpg but if it had done two laps, that average would have plummeted.

If a 38-mile-electric-range Chevy Volt had attempted the same thing, what would it have gotten? Infinite MPG? And the same thing for lap two? And maybe lap three?