Using (ir) to express the future

In English there are two ways to talk about future events, "I will sleep late tomorrow" and "I'm going to sleep late tomorrow." Similarly in Spanish we can form the future with the verb ir (conjugate), which means "go to". When used to talk about the future the verb (ir) means "going to". Sentences are formed using the formula below:

present tense of the verb (ir) + a + infinitive = future

Some example sentences using the future tense are shown below:

Yo voy a buscar su carro ahora.
I'm going to search your car now.

Tú vas a llegar muy tarde.
You are going to arrive very late.

Usted va a trabajar con Marta.
You're going to work with Marta.

Marta va a estar bien, gracias.
Marta is going to be fine, thanks.

Ellas van a bajar del carro.
They're going to get out of the car.