12 to 30 tons of Carbon upfront to build a new EV car=9390 miles at 20 mpg

 To offset 12 tons of carbon, the required driving time varies significantly, but assuming a typical EV reduces emissions by about 3.6 tons of CO2 per year compared to a gasoline car, you would need to drive approximately 3.3 to 3.4 years to offset 12 tons of carbon, though this figure is a general estimate and depends on the specific EV, driving habits, and electricity source

9000 miles of driving based on 20 mpg: 

The total grams of CO2 are divided by the CO2 emissions per gallon to find the total gallons of gasoline consumed.

$\frac{4173051\text{grams}}{8887\frac{\text{grams}}{\text{gallon}}}\approx 469.56\text{gallons}$</

Intense exercise jump starts Ketosis - at least 3 1/2 hours earlier (but I think even more extreme exercise kicks it in faster)

 fascinating. I just did intensive work for 4 hours nonstop in the woods today - and my Total Gym training completely saved me! I pushed myself to the extreme and made sure to vary my muscle use by changing tools - so I could keep working. I got done what I hoped to get done - and I had a magical forest moment with a Spring Peeper staring me in the eyes when I popped out of a five foot hole I was head down in - the ratcheting socket sound had called in the Spring Peeper tree frog - they even have some pink coloration! Wow - I scooped it up so it didn't jump down into the hole. hahaha. Yeah I didn't eat while working - just drank water a bit. Got home 3 hours later and I definitely had burned fat into protein as ketosis - dark intense urine yellow. "However, this study found that participants were in ketosis three and a half hours sooner, on average, when they started their fast with an exercise session." Wow that's wild that I just corroborated that study! I had no idea you could kick in ketosis that much faster! Very fascinating. "Intense exercise before starting a fast can help you reach ketosis faster, research suggests...The chemical, beta hydroxybutyrate (BHB), has been linked to health benefits like reduced inflammation, better blood sugar control, and lower risk of aging-related diseases. Typically, it can take between 20 to 24 hours of fasting for ketosis to begin and ketones to appear. However, this study found that participants were in ketosis three and a half hours sooner, on average, when they started their fast with an exercise session. " OK so I ate before I left and I drove six hours and worked hard four hours. So my exercise was super extreme though - fascinating. I lost 2 pounds even though I ate three pieces of pizza and a bag of small cookies - so probably 1000 calories. hahaha.