as i understand it from this page, the engines don’t actually matter, its your cars aerodynamics and vehicle weight. more weight = less efficiency for fuel, less speed. and towing is SUPER inefficient for aerodynamics (though admittedly i have no idea how that system works.)
also for refrence, a v12 diesel engine has about (and i googled this) 1900 hp. (though that particular engine says its used on a yacht, assumedly powering the turbine in the back.) v12 car engines about 600-700, going off luxury sportscars of the modern times.
most of the random cars in cata use inline-4 or V6, with V6 being about 300 hp
Towing isn’t super inefficient for aerodynamics. The cable itself has minimal air drag and should make the whole system behave as if you had an 8 wheeler with summed mass with a 150kW engine. Since you have 2 cars in the system, you have double the aerodynamic drag. But at 12km/h that is negligeable.
The only non-negligeable variable here is rolling resistance. Does anyone have a formula for that?
The power drain is severely wrong, but fixing it has been complicated.
The slow towing speeds was caused by essentially the towed vehicle having its parking brake on. I submitted a fix for that issue that got accepted yesterday; please update and see if that fixed things.
Given that the towed vehicle in question also was an electric car, I wouldn’t have been suprised if it had interfering regenerative brakes… I doubt(ed) that it’s a game mechanic as of now, but who knows…
Yeah, I noted in the PR that fixed the bug that “the developer isn’t responsible for your towing vehicle getting rammed by your towed vehicle.” Just think of it as a preview of multi-second brakes.
The hand/parking brake can be applied while driving, and it’s assumed to be set when a vehicle’s engine is off. Conversely, it’s assumed to be unset when a vehicle’s engine is on. So turning on the engine of a vehicle, even if you don’t intend to drive it, makes it easier to Grab or push with another vehicle.