(CNN) - Sen. John McCain –a politician who has seen his share of campaign buses– had harsh words Monday for Pres. Barack Obama's choice of election transportation.
"I must say again I have never seen an uglier bus than a Canadian one," the Arizona senator said in a speech on the Senate floor Monday. "He is traveling around on a Canadian bus touting American jobs."
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Obama launched a bus tour Monday through North Carolina and Virginia, where he is touting his American Jobs Act. He carried both states in the 2008 election but they are considered up for grabs in 2012.
Obama's bus –an imposing black model from the Canadian company Prevost– was first used on a tour of the Midwest in August. At the time, CNN reported that the Secret Service bought two buses at $1.1 million apiece with the intention of both parties' nominees using them come the general election.
The company used to outfit the bus is American however, and has designed buses for musical acts, theatre tours, and presidential candidates – including McCain.
White House Communications Director Dan Pfeiffer downplayed the criticism Monday on CNN's "The Situation Room with Wolf Blitzer."
"I think that's a lot of politics from Senator McCain," Pfeiffer said. "As we've talked about this before, the Secret Service acquired the bus from an American company. It is made by the same company that made Mr. McCain's very famous 'Straight Talk Express.'"
On Monday, McCain was also critical of the president's decision to campaign while touting his jobs plan, saying he was using taxpayer money to spread his re-election message.
"On the taxpayer-paid dime, the president is now traveling attacking the Republican plan. Obviously I think unfairly," McCain said.
He continued, "I think he has the, certainly in a political venue, the right and privilege to do that. I think the question might be, 'Is that appropriate on the taxpayer's dime' since it is clearly campaigning."
–CNN's Virginia Nicolaidis contributed to this report.