I wondered about that too. Can you imagine a Corvette (or any car) weighing 151 pounds?

I thought he meant engine weight but even that was wrong.

 

^Yep...once an engineer, always an engineer!

And for Rob, when I was working, the Finance guys made me an honorary cost accountant. That, I am very proud of!

 

and the method for calculating HP has changed over the years such that cars from the modern era are underrated compared to cars like the Jag and Cobras.

 

Of course there is the Koenissegg agera One:!
One horsepower to 1 KG or 2.2. lbs. 1160 HP and just under 3,000 lbs.
One:1 - Koenigsegg | Koenigsegg

of course stupid money.
and the Porsche 918 which 4.23 lbs/HP

The definitive list of silly https://www.supercars.net/blog/top-50-supercars-listed-0-60-mph-runs/
Interesting mix of street vs road.

 

The original number that I put up, 0.2, but mislabeled is what’s known as the power to weight ratio (horsepower divided by the weight) but I mislabled it backwards. But stated either way, comparisons can be made.

For example;
Dodge Viper is 0.136
Ferrari 355 F1 is 0.126
Lotus Esprit V8 is 0.115
345 hp Corvette is 0.106

Higher is better, and I’ve heard a couple different numbers on the weight but the power to weight ratio, as I understand it for the newest Vet, comes in at somewhere between 0.214 and 0.218.

Bill, I agree HP numbers have at times been overstated, understated, and misstated. That's out of my control. The same can be said for a car's weight.

“Although the standard for rating horsepower has been available for over 200 years, clever car manufacturers have found ways to change the ratings of their engines to suit their needs. During the famous horsepower wars of the 1960s, manufacturers could get higher figures by testing without auxiliary items such as alternators or even water pumps. High ratings backfired when insurance companies noticed them and started to charge more for what they saw as a higher risk. Manufacturers sometimes responded by listing lower horsepower figures, forcing enthusiasts to look at the magazine test reports to determine what was going on. In the early seventies the SAE (Society of Automotive Engineers) stepped in with standardized test procedures and the figure’s were more consistent.”
Source: What is Horsepower?

BTW, I made up my original list of HP and weights for the car's mentioned, and lots more, back nearly 20 years ago (when I got on kick for things like that); best I can remember most numbers came from R&T (a trusted source for stuff like that, at least I thought so).