William Payne was also accused at a fatal accident inquiry of lying by not telling the DVLA he had a history of blackouts, which could have stopped him being on the road.
The 54-year-old faced the claims yesterday as he was quizzed in public for the first time about the deaths of Mhairi Convy, 18, and Laura Stewart, 20.
The pair were struck by Payne's Range Rover after it mounted a pavement in Glasgow city centre in December 2010.
The dad appeared at the probe which resumed at Glasgow Sheriff Court.
Payne last year had criminal proceedings in connection with the incident dropped by prosecutors.
The FAI was arranged to look at the circumstances of the deaths, in North Hanover Street, on December 17, 2010.
Payne faced quest-ions from Dorothy Bain, the QC repres-enting the families of the two women, but refused to answer many of them. Sheriff Andrew Normand earlier told him he did not have to answer any which may show him to be guilty of a crime.
But Miss Bain quizzed him on the renewal of an HGV licence in July 2010.
The QC said the "no" box was ticked on a document asking if Payne had suffered blackouts in the last five years. The court heard several claims Payne had collapsed during that time.
Miss Bain accused Payne of being "totally and utterly unreliable about his medical history". She went on: "If you had answered 'yes' (on the docu-ment), you would not have been allowed to drive.
"You were reckless to the safety of other people because as we have seen today you are just looking out for number one.
"That should be your mantra - number one, that is what matters."
Payne: "I don't want to answer that."
The QC also said: "Your selfishness has taken the lives of two young women.
"Two young women perfectly innocently going out doing their Christmas shopping.
"You could have prevented that by telling the truth."
Payne again replied he could not answer what was put to him.
She added: "The responsibility rests squarely on your shoulders." He said: "I cannot answer that question."
The inquiry continues.