Sedans are classic rides. They offer good legroom and headroom, but still, they are not high enough like other big-size rides like SUVs. So, if a sedan were to have a panoramic sunroof, it would compromise the headroom. Having glass roofs in SUVs is no issue as they are highly spacious. But a sedan already has limited spacing, which will only get crumbled by a sunroof or moonroof. Thus, sedans are not ideal rides to include them.