This is where I'm going to post all my mods as I make them. Only one is for 1.0.0 currently but I will be releasing more soon all for Minecraft Forge.
This mod does not add any new objects, it merely modifies EntityMinecart, ItemMinecart, and EntityPlayer. If any other mods you use modify those files, this will be incompatible with them.
I remember seeing a list of planned features and one of them was to allow for Minecarts to be used in lava like boats can be used in water. This mod makes that possible.
Let me know if you find any bugs or have any additional features you want to suggest.