Re: "manned missions to Mars to be completed within a mere two months"
It's a "Bussard" and the energy required to form one would far exceed anything usable as fuel you could collect in it. If you had unlimited energy it would be a useful way to gather reaction mass.
Using a Bussard as a ramjet type of propulsion as opposed to a mass collector has a pretty major flaw apart from the prestigious energy requirements. It does not work in reverse, you cannot use it to decelerate when you get to (and zoom past) your destination.
Hydrogen on it's own is not a particularly useful fuel, you can't burn it without some form of oxidant. Some will be deuterium (or tritium if you're really lucky) but not enough to run a fusion reactor otherwise it's really only useful as reaction mass.
Look to the Culture series by Iain M Banks, he had some form of energy grid "above" and "below" space which could be tapped for unlimited energy and traction. Could we tap the Higgs field in a similar way? Almost certainly not but it's worth a look to make sure. For really silly ways to cross the cosmos look at anything by Harry Harrison.
If we want the stars we have to look at all the daft ideas until we find the one that isn't as stupid as it first seemed - we have to abandon Newtonian propulsion and interact directly with spacetime - many a Nobel up for grabs for anyone who works out how to do that.