That’s fair, although I think that depends a lot on the type of car you drive. There’s an option to tell Maps what type of car you drive (electric, hybrid, or gas), which will change the results, because cars with regenerative breaking often get better “city” milage than “highway” milage.
It also probably depends on factors like how aerodynamic your vehicle is, because it makes a huge difference above ~50mph (air resistance/drag increases exponentially with speed)
Start feeding it too, or get one of the neighbors who’s been feeding it to help out. Your best bet is a feral cat trap, which are kinda pricey, but if you call around to a few local rescues or “trap, neuter, release” programs, they may be able to lend you one. Then you can likely just use food to lure it into the trap.
Of course, if this cat used to be someone’s pet, you could even just try luring it into a garage or, hell, a big cardboard box, from which you could put some thick gloves on and transfer it into a pet carrier