I was building a rail network underground and I was about to place a minecart on a piece of sloped track, the game did let me place it and did let me get in the minecart.

What actually happened was...:
Once the minecart was placed on the sloping track, the game did let me get into the minecart but now I am stuck in it and I have no way of getting out of it. I have tried right clicking the minecart and tried to destroy it but the game simply destroys the block that the minecart is sitting on.

Steps to Reproduce:
1. Place one block on top of another and then a block in front of those.
2. Place pieces of track so that the track slopes.
3. Place a minecart on the sloping track and try to get both in and out of the minecart.

Please help me solve this issue as I do enjoy playing Minecraft

P.S. The game just told me to press LSHIFT to get out. That was slow.