I tried to build a redstone vehicle in Minecraft (vanilla), but my attempts proved futile. I tried to build it using pistons, wire and some pushable blocks, but it didn't work, because the wire breaks when pushed. Also, when I used redstone blocks right in front of the pistons, they haven't extended. Any idea for a redstone-using vehicle, on unmodded Minecraft?
You need slime blocks. They not only prevent fall damage and a trampoline effect, it also gets attatched to blocks so when the block is moved with s piston, the slime block moves with it depending on what block it's next to. This is very useful for cars. Here's an example of a slime block car:
Use these to build your slime block car. Since redstone falls of a moved block, use slime blocks and redstone blocks instead of dust!