One crazy thing in this game is that Batman for unknown reasons can't use any weapons. We all know that he has some heavy weaponry mounted on his vehicle: artillery cannon and missile launchers. However, the only allowed way for him to destroy the enemy vehicles is to smash at them and literary push them out of the highway. At those speeds, only one or two bumps should be sufficient to achieve that.
Batmobile has strong armor which is bulletproof and resistant to smaller projectiles. However, constant bumping into other vehicles can weaken it over time. So make sure you avoid other drivers, because if you damage your shield, batmobile starts smoking and you are bound to fail. Unfortunately there is no damage indicator anywhere on the screen to show you your current state of your armor.
On batmangamesonly.com site there is already one similar game called Batman Wanted . The difference is that here the view is from the side and not from above, and in the other game weapons are allowed. Those who appreciate a good car chase, and hate that Dark Knight is not allowed to use weapons in this game - can take a look at that other game.