[maimeowmeow]

maybe you were pressing both

[novaleaf]

From what I understand, the computer will (and should) reject the acceleration attempt in favor of the brake.

But, if you own a reasonably modern vehicle, try it :)

[gburdell3]

That's not how it works. The brakes are more powerful than the engine, sure, but only at full braking power. Ask anyone who owns a rear-wheel-drive sports car what happens when you push both pedals at the same time and they will literally leave you in a cloud of smoke.

[gavia1]

If this were true people wouldn't be able to do burnouts in auto transmissions cars?

[ummonk]

I could rev my engine while pressing the brake on a 2014 Honda Civic (helped with not going backwards when I needed to start moving from a standstill on a steep hill). Is that modern enough for you?

(On the other hand my 2017 Subaru Forester does not do the same; thankfully it has less of a tendency to roll backwards when releasing the brake on a steep hill.)