If you wanted faster and more eficient carts read this.
What makes no sense is that minecarts with furnaces take too long to carry you up from point 0 to point 30 without having someone beating you to the top and running out of coal to run it. so please find a way to make furnaces charge up with coal so that, with the press of a button the cart goes as fast as a powered rail so we dont have to lose our please !!!!!