If you want to savor a tasteful plate of rojak one place you can go is to Seri Petaling. The hawker peddling their rojak on pickup trucks carry out their business on Jalan Merah Silu in Seri Petaling (click attached map) . The staff are well dressed with white long sleeves shirt, vest and a bow. Aprons too keep their clothes clean. Once I saw them wearing cowboy hats which created an identity for them and their business.
Beside the rojak you can also order a cool refreshing cendol to washdown your throat after swallowing the sweet gravy of the rojak.