Thanks for all your contributions. So which means it is very normal that i wasn't able to achieve the effect and I was worried it is only me that I never knew how to take it.
Brydzo and ToGo, true what you say is right and the above was only an example (I also tried to take a shot on the road looking across the road while I wanted to see streaks of traffic passing across the screen. The one posted above was just a shot I took while keeping my brains working as to why I can;t get as I was driving back home but still I was trying to go at a slower pace as to other cars in my sides so hoping to get some motion blur on the side.
Learning: From all your suggestions the solution I conclude is either I should go after mid day or during sunset. Secondly I should try ND filter.
thanks all