I personally think that as far as IRL getting a new chassis is concerned it will greatly depend on the health of the series, if grids are diminishing (as they seem to be currently) then a new chassis is the last thing they need as it just increases costs and as all the teams are now running Dallaras with Honda engines there is parity across the field, largely rendering a new chassis unnessarcery and with less cars in the field there will be a surplus supply of used chassis, which decreases costs.