Crail - A mob that knows the rails

The Crail is a hostile or passive mob that lives in the mineshafts. The Crail looks like a minecart but has two eyes in the both ends of the cart. The eyes would light up as it goes to one direction. It would be really slow on land, but really fast on rails. If it attacks, the best bet for the player is to break the rails or unpower the rails. If this mob would be added it could work with couple of new currently not in Minecraft mechanics. For example if connecting minecarts will be a thing, you could connect minecarts to Crail to make them move without any powered rails. This would also give the Crail full control of the connected carts. This could make many cool contraptions possible. (Could replace the furnace minecart) Crail would drop charcoal upon death. I am not sure if Crail should be a hostile mob or tameable passive mob. The Crail would bring something really fresh to the table! Thank you and have a nice day!🖤