1 The engines come in the cars from the factory - all you need to do is look up the specifications for the model of the brands specified. Hertz does not put engines in cars.
If America is any guide, the smallest, whimpiest ones available.
3 I KNOW VOLVOS (US ONLY ) but I checked Volvo euro models , the c70 has two turbo diesel engines Europe only , 5 cyl 150 and 177 PS. And a 2.5 turbo gasoline engine 230 HP (also for US production) I would say location and availability of gasoline or diesel would be determined by country -Germany for instance with its autobahn may offer higher powered models -call hertz and ask , you can book a rental from any country to any country where hertz does business. volvocars.com/uk/all-cars/volvo-c70/whic... .
Before I got studs, I might note, I used what are called SIPED TIRES. Check them out. I wasn't driving, but a friend drove my car across the Alcan Highway in December '03 with just these tires.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.