func (c *Car) CanShow() bool {
	s := false
	if e := os.Getenv("BULLETTRAIN_CAR_OS_SHOW"); e == "true" {
		s = true
	}
	return s
}
CanShow decides if this car needs to be displayed.
package carOs
import (
	"bytes"
	"io/ioutil"
	"log"
	"os"
	"regexp"
	"runtime"
	"text/template"
	"github.com/bullettrain-sh/bullettrain-go-core/src/ansi"
)
const (
	carPaint    = "white:cyan"
	symbolPaint = "white:cyan"
	carTemplate = `{{.Icon | printf "%s " | cs}}{{.Name | c}}`
)
type Car struct {
	paint string
}
func (c *Car) GetPaint() string {
	if c.paint = os.Getenv("BULLETTRAIN_CAR_OS_PAINT"); c.paint == "" {
		c.paint = carPaint
	}
	return c.paint
}