Hong Kongers are purported to have the highest average IQ on Earth. Thus we are the perfect group to finally find that holy grail: the precise equation between time and money.

The tolls at Hong Kong's Eastern tunnel rose yesterday to HK$25, causing traffic chaos as even more cars used the Government owned HK$20 Cross-Harbour tunnel instead. Protests continue as much head-scratching amongst the great and good attempts to solve the "congestion problem" at the Cross-Harbour tunnel.

High IQed Hong Kongers will soon realise there are trade-offs to be had. Yes the toll is $5 more but there is now much less traffic, ensuring a quicker journey. There is less aggrivation from sitting in an hour long traffic jam plus the savings in petrol. On the other side if the private tunnel operators realise the higher tolls are causing a big drop in traffic they will quickly see a drop in profitability from falling revenue. The Government could help by imposing a peak-hour congestion charge for using the Cross-Harbour tunnel of HK$5, with the proceeds dedicated to improved public transport links.

It remains to be seen if the average high IQ Hong Konger can work all this out themself.

Meanwhile in Hong Kong Disneyland watch: the SCMP reports Disney is preparing to face its biggest challenge.

Smoking outside designated areas and spitting are expected to top the list of undesirable behaviour at Disney's Hong Kong theme park, despite efforts to educate guests who may be unfamiliar with park etiquette. "This is a challenge we have to face. We have to cope with it. We cannot fine them, but we can ask them to leave," a senior company source said.

Disney will also give each customer a brochure on proper behaviour in the park.