HD makes some good points especially about this being a business venture not an altruistic community venture that must be accepted or the park will fall apart. So far Mr Parrish and his team are not offering any investment in the wider community. He is flogging Selhurst to pay for this move, not investing his own cash but the way this is being spoken of anyone would think he was a philnthropic saint/visionary. He is an insurance salesman I believe.
Comparing the influx of large crowds into the area from yesteryear is not realistic. To begin with back in the day, CPP was served by a second larger station to accomodate ther numbers, the High Level St that used to be on the Parade. Car ownership was a fraction then as it is now, even if you only go back 20 years the increase is huge, hence congestion we see all around us. And the population of the surrounding areas was much smaller. So for those who wish to bang on about CP being able to cope with crowds of 100,000 at the turn of the last century or indeed in the 60s can you please take a reality check? Actually try this...
I came across the following on VN, it made my eyes bleed, read it and weep:
Okey dokey here's some more figure fun

:
So we got between 21-30 CPFC matches a year, plus a number of rugby league games plus "other" sporting fixtures plus summer concerts. The proposed stadium is going to be used a lot more than every other week and utilised to a much larger capacity than 20,000. I would imagine nearly every weekend and at least one evening a week, understandable as this is a private business venture after all. As I mentioned before why design a stadium with twice as much capacity as needed if the intention is to underuse it? The 20,000 figure is a red herring. Read the CPFC boards and see the posts predicting immediate and rapid membership growth, expect attendance to average at 30,000 if this proposal is realised.
Now lets take the 20,000 figure and estimate the number of cars that may decend on CP. Let's accept what the ambassadors are telling us, that the majority of fans will be using public transport, so let's say 14,000 fans arrive by train & bus and 1,000 (the proper locals as they call themselves!) arrive by foot. That's 15,000 people arriving and leaving at the same time.
I wonder how CP, Penge and Sydenham stations will cope but one thing's for sure they will be best avoided pre and post match/concert/other sporting event. That leaves 5,000 fans coming by car. How many cars will 5,000 people use? Let's say they come 2 to a car, that's 2,500 cars. The average car is 4m long. 2,500 x 4 = 10,000m or 10 kilometers. So this tells me that 2,500 cars on the single lane carriageways will take up a total of 10 kilometers of road space

if they were lined up nose to nose. Of course the total road coverage will be more as they won't be travelling bumper to bumper.
Now let's do an estimate for 30,000 crowd using same criteria. 3/4s will come by public transport or by foot that leaves 7,500 people arriving by car and let's say each car carries 2 fans. That equates to 3,750 cars, which means a total of 15,000m or 15 kilometers

of road space if they are bumper to bumper, more of not.
Now one last calculation for the 40,000 strong crowd. 30,000 arrive by public transport or on foot leaving 10,000 arriving by car. 5,000 cars measuring an average of 4m each would use up result in 20,000m or 20kilometers

of road space.
How will this number of vehicles impact upon parking? Well if it's only 20,000 crowd then the predicted 2,500 cars will need 10K of parking space; if it's 30,000 they'll be needing 15K of road space and if it's a full house, sorry stadium, then 20K of parking space will be required
I am convinced that regardless of what emerges in the details, this area, it's transport hubs and it's environs cannot absorb the proposed volume of people or traffic without damage to the surrounding environment, infra structure and quality of life.