 Amongst the support documentation for the white paper was a report by transport professors Roderick Smith and Roger Kemp which reviewed the options for a MagLev trunk line, particularly those proposed by UK Ultraspeed, and concluded that it was a high-risk option, with a high impact on transport energy use and therefore carbon dioxide emissions.In March 2008, "The Observer" and "The Sunday Times" both reported that a second report for the Department of Transport by Atkins entitled "Because Transport Matters" showed that the original Option 8 (a high-speed network on both west and east coasts) would give a benefit of £63bn, well in excess of the predicted costs of £31bn.The report suggested building two lines on the East and West coasts.