Can we get rid of road-side systems?

It looks like in-car systems have the future. A lot of functionality of road-side systems is put in-car. However, penetration rates of those kind of in-car systems is nog high enough to get rid of the road-side systems. But when will this be the case? This question was discussed with a challenge - a quick scan analysis by a group of experts with a short duration. The report of the challenge can be downloaded here, but is only available in Dutch.