Putting the dual-listing plan on hold will help speed up the overseas IPO, as the company probably wants to get the sale done sooner rather than later.
The company may wish to boost sentiment of the IPO given the lukewarm interest in the automotive industry.
Simultaneous listing would lengthen the process as it would be the first such trial for both exchanges and lots of issues would crop up. The company probably wants to get the sale done sooner rather than later.