While the world moves towards renewable sources of transport fuel, this could however take a few decades for large scale success. In the meantime, coal-based oil (using thermochemical processes) could be the ideal transition fuel. The technology is proven, and large-scale oil consuming countries such as the USA have large deposits of coal. The cost of this process is still an issue, but this could get solved over time. Do you think coal-to-oil will be one of the most important technologies during the next two decades?