Climbing aboard the Intellibus, as it's called, felt a bit like being part of a flash mob.

We were five strangers who had been given instructions on where and when to meet.

Right on time the bus and our chaperone, Andy, appeared on the South Perth foreshore, and after signing our lives away we were off.

Andy likened the Intellibus technology to Hansel and Gretel leaving a trail of breadcrumbs to follow home.

In this case the bus's on-board computer followed the virtual crumbs dropped by its programmers.

"It will stick rigidly to the centimetre on the path that we've programmed in," Andy said.

What's the gaming console for?

There are five levels when it comes to just how automated a driverless vehicle is.

The Intellibus is a level four.

That means it must have someone on board who can grab the controls, which look like they belong to a gaming console, if necessary.

The bus is also fitted with sensors to detect obstacles like rubbish bins, badly parked cars and people.

"We had the odd larrikin poke their arm out in front to see if it will stop and it does," Andy said.

How many people have been on board?

The trial has attracted a huge level of public interest.

This week the 2,000th passenger climbed on and more than 4,000 people remain on a waiting list.

My fellow passenger, Jenny, said she signed up because she's interested in technology.

"I'm also interested in environmental causes and I have a background in mathematics and physics," she said.

How fast can it go?

The maximum speed the bus can travel at is 45 kilometres per hour.

Dave, the driver of the RAC's driverless bus, has controls ready if he needs to take control of the bus. ( ABC News: Eliza Borrello )

On our trip, we went pretty slow, travelling at between 11kph and 14kph.

I asked another passenger, Cass, if she felt safe.

"It feels really safe, it feels like it's going to be able to work out the problems it has to solve at the pace that we're going," she replied.

Andy said the bus was set to a slightly higher speed at the start of the trial but the programmers reduced it after feedback.

"The public were saying, 'oh, it's a trial, we just want it to go a little bit slower'."

Could the bus be hacked?

Another passenger, Lorraine Barnett, asked Andy that very question.

"There's only one link to the vehicle and that's effectively the GPS link, the only thing that could possibly happen that could interrupt that and the vehicle would just stop," he said.

"But no you couldn't hijack it and drive it into the river."

Are there any driverless buses in other Australian cities?

WA isn't the first state to test a driverless vehicle.

South Australia has introduced legislation allowing them to be trialled there too.

Driverless bus passenger Lorraine Barnett believes she will own a driverless car one day. ( ABC News: Eliza Borrello )

But Anne Stills from the Royal Automobile Club, WA's roadside assistance provider, said WA was the first state to host a driverless bus.

"We wanted Western Australia and Australia to be in a position to be ready for this type of technology," she said.

"So it's going to bring wholesale changes to regulation and all sorts of other areas and sectors and having a shuttle like ours really takes it from theory and puts it into reality."

Ms Stills said the bus had been taken off the road for periods during the trial, which began in August 2016, to get software updates.

"We liken it to the trend of iPhones… the technology is moving so fast, within just a couple of months of receiving our vehicle we have had seven or eight software updates."

Has the bus crashed?

No, so far so good and if today's passengers reflect the market appetite, the future for driverless technology looks bright.

"I will be in a driverless car in my lifetime, yes," Ms Barnett said.