https://motherboard.vice.com/en_us/article/ev5kan/the-rocket-that-will-take-elons-car-to-mars-is-about-to-test-its-engines

On Friday afternoon, SpaceX is scheduled to complete the first static fire of its Falcon Heavy, which the company hopes will one day carry astronauts to Mars. A static fire involves testing the rocket’s engines at full thrust for a few seconds while the rocket is held in place on the launch mount.

The company had originally planned to do the static fire last Thursday, but aborted the test after complications related to the launch mount. The static fire has since been scrubbed two additional times, but delays are par the course for the Falcon Heavy. The rocket launch was originally planned for “late 2013 or 2014,” before eventually getting pushed to 2017, and now reportedly the beginning of 2018.