He talks about getting to Mars by 2027.
He talks about a device called a WAVAR which will extract water from humidity. He also talks about a device called MOXIE which will convert the CO2 from the air into breathable oxygen. He talks about eating dried foods to eat. He talks about living in caves because of solar radiation. Taking these things in isolation, they seem reasonable enough devices. However, the energy required to run these devices must be huge. He, no surprise, doesn't touch on the energy component.
He then goes on to talk about terraforming Mars. He talks about heating up dry ice (CO2) in order to create an atmosphere with a solar sail. He predicts that doing this will take 20 years before we get a planet with weather and a climate similar to British Columbia. He does concede that it'll take 1000 years before the atmosphere is breathable.
EDIT: To elaborate a bit on what the question is: How much power do these systems need? How many solar panels (or alternative form of power (ie. nuclear) will that require? How many orders of magnitude bigger than previous rockets will one destined to Mars with this payload need to be? Or, how many trips/dropoffs will be necessary? That sort of thing.
It seems as though it would take hundreds of dropoffs of materials before humans would be ready to stay there for an extended period of time. Given that Earth and Mars are only close enough once every two years that means we'd either need to be launching 10s if not 100s of rockets every two years to dropoff materials or some other assumption I've already made is horribly wrong. For starters/guidance, how many/how badly are my assumptions in the preceding paragraph?