Tests must now be conducted to study the behavior of this biobitum over time, and the profitability of the process before seeing it, perhaps, cover our roads.
Izivivinyo kumele zenzeke ukuze zihlolwe ukuziphatha kwalesi biobitum ngokuhamba kwesikhathi, futhi inzuzo yenqubo ngaphambi kokuyibona, mhlawumbe, ihlanganisa imigwaqo yethu.