1.   Indycar racing offers the advantage of off-the-peg cars and engine packages.

2.   It will offer advantages to international and to domestic travellers.

3.   On-line backup offers several advantages over removable storage systems.

4.   Such unpredictability can offer advantages, however.

5.   They can offer little advantage over pressure jet cleaners, are sometimes dangerous and are generally more expensive to run.

6.   They offer several advantages over conventional approaches.