The only advantage this type of engine would have is that it requires no fuel; however, ion propulsion (which is real, in user, and produces millions of times more thrust) requires very little fuel. Also, with proper flight path planning, in space there is very little drag. You could "coast and burn" very effectively.

Wouldn't the next biggest size be a Petafactory, which suffers from two unfortunate associations:

The total change in inertia is constant; however, the specific impulse is lower with as helmet. The padding increases the time between the impact and when your head and brain stop.

Whenever you are talking about anatomy you have to be super specific, that's just the nature of the subject.

I would classify decapitation as neck or spinal trauma, unless the skull was bisected.

Maybe there were signs that the decapitation was performed postmortem, thereby ruling out decapitation as the cod.

I live in Texas and anything less than an F250 dually is considered a small vehicle. Crash the smart into a full sized American vehicle and show us the results, then we can be impressed (or dismayed).

Elon Musk and Tesla Motors process once again that corporations and billionaires don't have to conform to the status quo. Instead of worrying about trademarks or just the bottom line, Mr. Musk has once again put the good of society as whole first.

I only wear my helmet in my car when the event requires (except for the time I kept it on to be funny in traffic). Although I know that I am safer wearing it than not, I do not feel unsafe driving around helmet free.

Could the "men's" qualifier have been omitted simply because the 2 world cups are held on different years? If the women's world cup was going on I could definitely see the omission as pernicious, but with only the men's tournament going on I think the slight is only perceived.

Many types of dog food also include bonemeal, good for dogs but bad for people (it can tear up your intestines, so if she sees blood in her stool she will know to law of the kibble).

The original roadster design had a two speed transmission, but the couldn't keep it from breaking due to all the torque.

The difference in speeds is due to the difference in the acceleration characteristics of electric and combustion propulsion.

There is always South Dakota, they have Mt. Rushmore, the Badlands, the Black Hills, and the world's only Corn Palace (full disclosure I was born there and have done the east to west trip across the state a number of times). Bonus in the summer time there is this motorcycle rally in Sturgis and if you have never been…

I would gladly volunteer to help carry extra luggage, I am pretty sure that I could keep up in my WRX. I am a high school science teacher and we are out for the summer, I was wondering what to do on break and a Jalopnik road trip kinda sounds fun.