In Escape Road 2, you can unlock new vehicles by collecting cash bags that appear randomly on the streets during gameplay. These cash bags accumulate as you drive, and you can use them to unlock a variety of vehicles in the shop, ranging from common to legendary models, including armored tanks, race cars, and luxury supercars.
Additionally, you can collect coins and scattered items to spin the wheel of rewards, which may grant you new vehicles.
To maximize your vehicle collection, focus on evading the police and surviving longer in the game, as this will increase the number of cash bags and items you can collect.
Remember, each vehicle has unique stats, so choose the ones that best suit your playstyle.