It will entirely depend on the state of the country by then of course, but, if we assume the virus is still prominent with no vaccine, I don't see people leaving their 'safe' cars (with no need for masks) for trains (with a need for masks) in mid-winter, unless the train becomes very significantly cheaper than the car, which, if two or more people are involved, is unlikely for many journeys, even at a 20% lower fare. The situation is changing so quickly that I really can't even stab at where we may be by then. An evening-out of the peak/off-peak load would be good in general, but will we ever see the traditional 'high' peak again?