List<BlockFace> faces = Arrays.asList(BlockFace.NORTH, BlockFace.WEST, BlockFace.SOUTH, BlockFace.EAST);
    @EventHandler(ignoreCancelled = true)
    public void onVehicleBlockCollision(VehicleBlockCollisionEvent event) {
        if (event.getVehicle() instanceof Minecart) {
            Block block = event.getBlock(); // block in opposite direction of collision
            Bukkit.getLogger().info("event block: " + block.getType().toString());
            Block minecartBlock = event.getVehicle().getLocation().getBlock();
            for (BlockFace face : faces) {
                Block bb = minecartBlock.getRelative(face);
                Bukkit.getLogger().info(face.toString() + ": " + bb.getType().toString());
            }
        }
    }