I think we'll keep our E-class wagon for a few more years but it might seriously get replaced with a Tesla. The more loaded ones have all the range we need for 98% of the time (could go to the cottage and some running around without recharging). Otherwise it will either be a probably a barely used Range Rover (take advantage of terrible depreciation), Q7 diesel or used Panamera (my wife's pick).
And Porsche's arn't old man cars! I've had mine for 19 years and I'm still not old!