Dennis, Head, question Donington GP switch
Bernie Ecclestone and F1's governing FIA announced on Friday that next year will be the sport's last visit to Silverstone, after the Northamptonshire circuit failed to meet up to the burgeoning standards of new venues.
But it is true that Donington Park, last the scene of a grand prix in 1993, now has an even greater task in order to live up to Ecclestone's high standards.
"The circuit has got to be extended, there's going to be very significant infrastructure problems," Dennis told reporters at Silverstone.
"You already get several hours of queuing even for the relatively smaller races that take place there.
"It really needs a new spur road from the motorway," said Dennis, who has traditionally backed Silverstone, the permanent home of the British grand prix since 1987.
Williams co-owner Patrick Head backed Dennis' view, according to the news agency Reuters.
"I hope they know where all the money's going to come from to build it up. The last time I was up there, it was quite basic," he said at Silverstone.
"This facility (Silverstone) is so far ahead of any other facility in England, as a racetrack, that it seems extraordinary to turn your back on this facility," Head added.